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. No. 345.163. Patented July 6, 1886.

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FEED GRINDER.

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FEED GRINDER.

Patented July 6, 1886.

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FEED GRINDER.

No. 345,163. Patented July 6, 1886.

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illll lllllllifllli MARTIN L. METZGER AND ALBERT COOPER, OF HARRISBURG,PENNSYL- VANIA, ASSIGNORS TO WVILLTAM O. HIOKOK, OF SAME'PLACE.

FEED-GRINDER.

SPECIFICATION forming part of Letters Patent No. 345,163, dated July 6,1886.

Application filed May ll, 1885.

To all whom, it may concern:

Be it known that we, MARTIN L. METZGER and ALBERT Ooorna, citizens ofthe United States, residing at Harrisburg, in the county of Dauphin andState of Pennsylvania, have invented certain new and useful Improvementsin Feed-Grinders; and we do hereby declare that the following is a full,clear, and

exact description of that part of our invenor grind the cut fodder, ashereinafter set forth and claimed.

Our said grinding mechanism is operated by the fodder-cutting mechanismanalogous to that partially illustrated in the accompanying drawings, inwhich Figure 1 is a side elevation ofour foddergrinding mechanismattached to our feed-cutting Inechanism. Fig. 2 is a longitudinalvertical section of the same. Fig. 8 is a perspective view of one of thetwo corresponding stops or buttons for securing the free end of theswinging wall of the mastieator adapted to release said end of the wallat will. Fig. at is a perspective view of the cut-feed picker. Figs. 5and 6 are vertical cross-sections of said machine, taken on the lines Mand N", respectively, in Fig. 2. Fig. 7 is a transverse section of thegrinder-casing, taken horizontally through the bearings for the picker.Fig. Sis a similar section taken at right air gles to the inclineddelivery-plate; and Fig. 9 is a bottom view of the lower end of theswinging wall and of one of its supporting stops on the end wall of thecasing.

Similar letters denote the same parts throughout the several views.

Our cut-fodder-grinding machine is here Serial No.lfi5,l55. (No model.)

rotary fcedcutting machine of our said pending application, and adetailed description thereofis here omitted, as it is evident that ourgrinding-machine may be applied to other constructions of rotaryteed-cutters. It is es- Sential only that the cutting-i'nachine shallhave its exit adapted to deliver the eut-feed directly into the inlet ofthe grinder-casin the grinding mechanism.

' In our grinder-casing the end walls, L, are joined together in therear by the transverse brace or plate P, having notched lugs P thereon,in which the screw-bolts 3 provided with nuts, hold the ends of thebrace abntted against said walls inside, and the parallel ledges ff onthe walls keep the brace later ally up to said bolts. The delivery-plateI" is also kept laterally between parallel ledges on the insides of saidend walls. It is set inelined to the grinding-roll L, so as to deliverthe cut fodder onto it, its lower edge being abntted close to said rollto prevent fodder 1 passing out without being ground. The plate Q, isalso supported between parallel retain ing ledges on said end walls. Itserves as a dash at the rear side of the casing, whereat theground feedis stopped and dropped onto the chute \V, which is arranged below, asshown.

The front wall, F F, is provided with lugs or cars F exteriorly, bywhich it is pivoted to the end walls, L, atthe top, as shown, in mannerto allow its lower end to swing away from or be set up to thecentrally-located grindingroll, L", which is a toothed cylinder havingits shaft is journaled through said end walls in line axially with thecutter-shaft d. Said swing-ing wall is sustained below in correctproximity to said roll by the stops 0, which are pivoted to the undersides of flanges c" in the recessed bases of said end walls, L, and areadapted to project under the foot end of said swinging wall, or, whenreversed, to stand free from said foot end and let it hang away fromsaid roll when the grinding is'to be intermitted. Said swinging wall iscurved eccentrically to come closer to said roll below than above, thusin shown as attached to the supports of the k and that the cuttingmechanism shall propel forming a threat between them, into which the cutfeed is forced to be masticated. Said wall is provided on its inner sidewith interchangeable or like toothed concave plates S S, which are heldin place by ledges on said wall and by bolts and nuts 1? F", insertedand arranged as shown. The concaves may be interchanged when the lowerone wears smooth before the upper one is worn out. The grinding roll orcylinder L is so toothed that in conjunction with the teeth of saidconcaves the cut fodder may be crushed or ground. Said roll is driven bythe pinion L on its shaft k, in communication with the gear L oncutter-shaft d, as shown. For certainly delivering the cut fodder intothe throat between said roll and concaves, the rotary picker L 3 isprovided, it having wings or paddles L" to catch and push the cut fodderas it drops from the cutters and pack or crowd itinto said throat. Saidpicker rotates in the same direction as said roll, and the cut fodder isforced into said threat by way of the upper part, F, of said wall F F.\Vithout the aid of the picker the cut fodder will not travel into saidthroat promptly, because the rapid rotation of the cutters creates asuction which retains the cut fodder in the casing containing thecutters, and causes it to choke up. If the grinding mechanism were to berun as a separate machine, the said picker might be omitted, as then cutfodder could be simply dropped into said throat.

The combined mechanism for grinding, c011- sisting of the toothed rollor cylinder, the toothed concaves secured on the swinging wall, thepicker and the casing constitute a dis tinct structure that may behandled as a whole.

Our grinding mechanism is to crush the cut fodder thoroughly withoutpulverizing the pithy portion, or to hull the same without grinding itlow, as in milling. For this purpose a single toothed roll run atmoderate speed is better than would be two rolls run at different highspeeds close together.

hay or strawis being out, said swinging wall is disengaged below or lethang.

We claim 1. A fodder-grinding machine comprising the roll L, theconcaves S S, an inclosing-easing having the delivery-plate P, abuttedclose to said roll, the adjustable front wall having said concavessupported thereon and the inlet at the top, the picker L y, mountedinsaid inlet, and means for rotating said roll and picker, as and for thepurpose set'forth.

2. A machine for grinding cut fodder, comprising the grinding-roll Lhaving its shaft It, provided with the pinion L, the picker L 3 havingitsshaft 1 provided with a pinion, the shafts of said roll and pickerbeing journaled axially parallel with each other, the rear wall orbrace, I the end walls provided with ledges, the delivery-plate P,supported between said ledges, the swinging front wall, F F, pivoted tosaid end walls above, the reversible stops 0*, supporting said frontwall below, the cou- ,wall eccentric to said roll, and mechanism forpropelling said pinions L and L substantially as and for the purposesset forth.

3. In a machine for grinding cut fodder,the combination of the toothedroll L, the casing having the shaft of said roll journaled in its ends Lthe delivery-plate P, secured to said ends and abutted close to the rearside of said roll, and the swinging front wall,F 1 having pivotalconnection at top with said ends, the pivoted stops 0', adapted to holdthe foot end of said front wall in adjusted position, and the eoncaves SS, secured on theinside of said front wall,al1 adapted to co-operate forgrinding and to intermit the grinding at will, as described.

MARTIN L. METZGER. ALBERT COOPER.

Witnesses:

D. C. MAURER, THEOPHILUS WEAVER.

